SpringBoot - HttpMessageNotReadableException：JSON解析错误：java.net.SocketTimeoutException

Question

我的代码抛出异常如下

JSON parse error: java.net.SocketTimeoutException; nested exception is com.fasterxml.jackson.databind.JsonMappingException: java.net.SocketTimeoutException (through reference chain: java.util.ArrayList[9])
org.springframework.http.converter.HttpMessageNotReadableException: JSON parse error: java.net.SocketTimeoutException; nested exception is com.fasterxml.jackson.databind.JsonMappingException: java.net.SocketTimeoutException (through reference chain: java.util.ArrayList[9])
        at org.springframework.http.converter.json.AbstractJackson2HttpMessageConverter.readJavaType(AbstractJackson2HttpMessageConverter.java:245) ~[spring-web-5.1.9.RELEASE.jar!/:5.1.9.RELEASE]
        at org.springframework.http.converter.json.AbstractJackson2HttpMessageConverter.read(AbstractJackson2HttpMessageConverter.java:227) ~[spring-web-5.1.9.RELEASE.jar!/:5.1.9.RELEASE]
        at org.springframework.web.servlet.mvc.method.annotation.AbstractMessageConverterMethodArgumentResolver.readWithMessageConverters(AbstractMessageConverterMethodArgumentResolver.java:204) ~[spring-webmvc-5.1.9.RELEASE.jar!/:5.1.9.RELEASE]
        at org.springframework.web.servlet.mvc.method.annotation.RequestResponseBodyMethodProcessor.readWithMessageConverters(RequestResponseBodyMethodProcessor.java:157) ~[spring-webmvc-5.1.9.RELEASE.jar!/:5.1.9.RELEASE]
        at org.springframework.web.servlet.mvc.method.annotation.RequestResponseBodyMethodProcessor.resolveArgument(RequestResponseBodyMethodProcessor.java:130) ~[spring-webmvc-5.1.9.RELEASE.jar!/:5.1.9.RELEASE]
        at org.springframework.web.method.support.HandlerMethodArgumentResolverComposite.resolveArgument(HandlerMethodArgumentResolverComposite.java:127) ~[spring-web-5.1.9.RELEASE.jar!/:5.1.9.RELEASE]
        at org.springframework.web.method.support.InvocableHandlerMethod.getMethodArgumentValues(InvocableHandlerMethod.java:167) ~[spring-web-5.1.9.RELEASE.jar!/:5.1.9.RELEASE]
        at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:134) ~[spring-web-5.1.9.RELEASE.jar!/:5.1.9.RELEASE]
        at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:104) ~[spring-webmvc-5.1.9.RELEASE.jar!/:5.1.9.RELEASE]
        at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:892) ~[spring-webmvc-5.1.9.RELEASE.jar!/:5.1.9.RELEASE]
        at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:797) ~[spring-webmvc-5.1.9.RELEASE.jar!/:5.1.9.RELEASE]
        at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) ~[spring-webmvc-5.1.9.RELEASE.jar!/:5.1.9.RELEASE]
        at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1039) [spring-webmvc-5.1.9.RELEASE.jar!/:5.1.9.RELEASE]

我的spring-boot版本是2.1.7.RELEASE，嵌入式tomcat用于运行应用程序。我也设置了属性server.connection-timeout=30s

我几乎到处搜索都无法找出这个问题的根本原因。我还捕获此异常并将其打印在日志中并将响应作为 BAD_REQUEST 返回。

这个异常是间歇性抛出的，我的生产服务器此时消耗了 80% 以上的 CPU 和内存。

这实际上是一个 POST 请求，请求正文的验证如下

    @RequestMapping( value = "/save", method = RequestMethod.POST, consumes = MediaType.APPLICATION_JSON_VALUE )
    public SaveDto create( @RequestBody @Valid SaveDto saveDto,
        HttpServletResponse response, HttpServletRequest request )
    {
      //my logic
    }

我的 SaveDto 如下

@JsonInclude( JsonInclude.Include.NON_NULL )
public class SaveDto
{
    private String id;
    @Size( min = 1 )
    @Valid
    private List< SaveEntryDto > saveLogEntries;
}

我的saveEntryDto如下

public class SaveEntryDto implements Comparable<SaveEntryDto> {
    private String id;
    private String idRef;
    private WER wer;
    @Min(0)
    @Max(1440)
    private Integer kjh;
    @Min(0)
    @Max(1440)
    private Integer gfd;
    private String abc;
    private Double def;
    private String ghi;
    private Boolean klm = Boolean.FALSE;
    private Boolean hug;
    private Boolean qwe;
    private Double azx;
    private Double xds;
    private Boolean cvf = Boolean.FALSE;
    private Boolean bgh = Boolean.FALSE;
    private String nmj;
    private Boolean rgh;
    private Boolean jkh;
    private Boolean mkl = Boolean.FALSE;
    private Boolean wed = Boolean.FALSE;
    private Long ftu;
    private XYZ xyzxd;
    private String klp;
    private ABC xxz;
    private Boolean llo;
    private Long iop;
    private Double poi;
    private Boolean uyt = Boolean.FALSE;
    private Boolean rew = Boolean.FALSE;
    private String qsd;
}

Answer 1

尝试server.tomcat.connection-timeout代替server.connection-timeout. 由于某种原因，有很多提到server.connection-timeout，但我认为它没有做任何事情（根据https://docs.spring.io/spring-boot/docs/current/reference/html/application-properties.html）。

server.tomcat.connection-timeout=30000- 这将超时设置为 30 秒